FreedomPop has developed a new “4G case” that’s designed specifically for people who own an Apple (AAPL) iPod touch but who don’t feel like paying for an iPhone or signing a two-year service agreement with a mobile carrier. Per CNET, the new FreedomPop iPod touch 4G Sleeve plugs into the iPod touch’s docking port and provides access to Sprint’s (S) 4G WiMAX and LTE networks. While the case itself costs $99 to buy, FreedomPop is giving users 500MB of free monthly data to play around with and users can add more data to their plans if they refer friends to the service. Users can then buy more monthly data for the Sleeve at $10 per additional gigabyte.